ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In ion beam figuring process, typically, the smaller ion beam diameter has a good abilityto “correct” the optical surface error, i.e. the smaller ion beam diameter indicates the higher materialremoval efficiency ε. The material removal efficiency is defined as the ratio of the volume ofdesired material removal to that of the real material removal. However the smaller ion beamdiameter always results in more processing time, which usually decreases the process reliability. Inthis paper, the relationship between the material removal efficiency and the ion beam diameter isanalyzed. The theoretical result shows that the material removal efficiency is a negative exponentialfunction of the ratio of ion beam diameter to the spatial error wavelength, (i.e. d/λ). And when d/λ=0.5, the material removal efficiency is 87%, which is acceptable in ion beam figuring process.When d/λ = 1, it rapidly decreases to 58%, which is unacceptable. According to theoretical analysisand simulation results, we recommend that d/λ should be less than 0.5 in order to obtain acceptablematerial removal efficiency in ion beam figuring process
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.364-366.470.pdf
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